Bluelab Trunv2 Truncheon Nutrient Meter, Digital Conductivity Tester In Water (Scales Include: Ec, 500, Ppm 700, Cf, Tds) Tool For Hydroponic System And Indoor Plant Grow, White

It is essential when growing with a hydroponic solution to know what the strength of the solution is before feeding your plants and while they are growing.This is easy if you use the Bluelab truncheon nutrient meter to take a reading of your solution, simply place the probe head into the solution for 1-2 minutes to reach the same temperature of your nutrient.The reading is indicated by the flashing lights.Calibration of the meter is not required.Meter length: 40.7 cm (16 1/32 in).Featuresfully waterproofauto on/off functiondaylight readable blue ledsbattery operatedno buttons, switches or knobsprovided with ec, cf, ppm 700 and ppm 500 scales.'